Résumé
The impact of temperature on plant fibres is key point when processing plant fibre composite with thermoplastic resin. Structural and biochemical evolution of plant cell walls with temperature may affect their final mechanical properties. These evolutions have been studied in-situ on flax fibres during a dynamic heating treatment, representative of conventional polymer processing temperatures. Originals results were observed regarding the reversibility of the indentation modulus, hardness and cellulose crystalline structure.